Home / 280,908,035.40-421,362,053.10-144,859,139.40

Finding the Fourth Proportional to 280,908,035.40, 421,362,053.10 and 144,859,139.40

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Solution

The fourth proportional to 280,908,035.40, 421,362,053.10 and 144,859,139.40 is: 217,288,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,908,035.40 : 421,362,053.10 = 144,859,139.40 : x
  2. Step 2: Convert to fraction form
    280,908,035.40/421,362,053.10 = 144,859,139.40/x
  3. Step 3: Cross multiply
    280,908,035.40x = 421,362,053.10 × 144,859,139.40
  4. Step 4: Simplify right side
    280,908,035.40x = 61,038,144,387,883,112
  5. Step 5: Solve for x
    x = 61,038,144,387,883,112/280,908,035.40
  6. Step 6: Final answer
    x = 217,288,709.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.